All assignees
799 prefixes in 860 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 860-200 | HARTFORD | 639C | 2015-11-23 | Yes |
| 860-201 | TORRINGTON | 829J | — | Yes |
| 860-202 | HARTFORD | 4036 | — | — |
| 860-203 | — | — | ||
| 860-204 | NORWICH | 9147 | — | Yes |
| 860-205 | HARTFORD | 4036 | — | — |
| 860-206 | HARTFORD | 318J | — | Yes |
| 860-207 | WILLIMNTIC | 6388 | 2013-02-27 | Yes |
| 860-208 | WILLIMNTIC | 4036 | — | — |
| 860-209 | HARTFORD | 6624 | 2002-08-01 | Yes |
| 860-210 | NEWMILFORD | 9147 | — | Yes |
| 860-211 | XXXXXXXXXX | MULT | — | — |
| 860-212 | HARTFORD | 4036 | — | — |
| 860-213 | NORWICH | 6624 | — | Yes |
| 860-214 | HARTFORD | 6388 | — | — |
| 860-215 | NORWICH | 6388 | 2011-12-06 | Yes |
| 860-216 | HARTFORD | 318J | — | Yes |
| 860-217 | SIMSBURY | 318J | — | Yes |
| 860-218 | HARTFORD | 829J | 2004-02-12 | Yes |
| 860-219 | WINDSOR | 318J | — | Yes |
| 860-220 | HARTFORD | 9748 | — | — |
| 860-221 | HARTFORD | 7143 | — | Yes |
| 860-222 | NORWICH | 199F | 2010-08-23 | Yes |
| 860-223 | NEWBRITAIN | 9147 | — | — |
| 860-224 | NEWBRITAIN | 9147 | — | — |
| 860-225 | NEWBRITAIN | 9147 | — | — |
| 860-226 | HARTFORD | 7229 | — | — |
| 860-227 | OLD SAYBRK | 6388 | — | — |
| 860-228 | COLUMBIA | 9147 | — | — |
| 860-229 | NEWBRITAIN | 9147 | — | — |
| 860-230 | PLAINFIELD | 9147 | — | Yes |
| 860-231 | HARTFORD | 9147 | — | — |
| 860-232 | HARTFORD | 9147 | — | — |
| 860-233 | HARTFORD | 9147 | — | — |
| 860-234 | WILLIMNTIC | 5562 | — | Yes |
| 860-235 | NEW LONDON | 6388 | — | — |
| 860-236 | HARTFORD | 9147 | — | — |
| 860-237 | NORWICH | 4800 | — | Yes |
| 860-238 | WINSTED | 829J | — | Yes |
| 860-239 | ENFIELD | 829J | — | Yes |
| 860-240 | HARTFORD | 9147 | — | — |
| 860-241 | HARTFORD | 9147 | — | — |
| 860-242 | HARTFORD | 9147 | — | — |
| 860-243 | HARTFORD | 9147 | — | — |
| 860-244 | HARTFORD | 9147 | — | Yes |
| 860-245 | MYSTIC | 9147 | — | Yes |
| 860-246 | HARTFORD | 9147 | — | — |
| 860-247 | HARTFORD | 9147 | — | Yes |
| 860-248 | CORNWALL | 4800 | — | Yes |
| 860-249 | HARTFORD | 9147 | — | Yes |
| 860-250 | HARTFORD | 5562 | — | Yes |
| 860-251 | HARTFORD | 9147 | — | Yes |
| 860-252 | HARTFORD | 7143 | — | — |
| 860-253 | ENFIELD | 9147 | — | Yes |
| 860-254 | WINDSORLKS | 7229 | — | Yes |
| 860-255 | FARMINGTON | 7229 | — | Yes |
| 860-256 | HARTFORD | 7229 | — | Yes |
| 860-257 | HARTFORD | 9147 | — | Yes |
| 860-258 | HARTFORD | 9147 | — | Yes |
| 860-259 | NEWBRITAIN | 7229 | — | Yes |
| 860-260 | HARTFORD | 9748 | — | — |
| 860-261 | BRISTOL | 7229 | — | Yes |
| 860-262 | MIDDLETOWN | 7229 | — | Yes |
| 860-263 | HARTFORD | 7229 | — | Yes |
| 860-264 | SIMSBURY | 7229 | — | Yes |
| 860-265 | ENFIELD | 7229 | — | Yes |
| 860-266 | GLASTONBY | 7229 | — | Yes |
| 860-267 | E HAMPTON | 9147 | — | Yes |
| 860-268 | MANCHESTER | 5562 | 2002-09-03 | Yes |
| 860-269 | FARMINGTON | 7229 | — | Yes |
| 860-270 | HARTFORD | 9147 | — | Yes |
| 860-271 | NEW LONDON | 9147 | — | Yes |
| 860-272 | ENFIELD | 9147 | — | Yes |
| 860-273 | HARTFORD | 9147 | — | — |
| 860-274 | WATERTOWN | 9147 | — | — |
| 860-275 | HARTFORD | 9147 | — | — |
| 860-276 | SOUTHINGTN | 9147 | — | Yes |
| 860-277 | HARTFORD | 9147 | — | — |
| 860-278 | HARTFORD | 9147 | — | Yes |
| 860-279 | HARTFORD | 9748 | — | — |
| 860-280 | HARTFORD | 9147 | — | Yes |
| 860-281 | MANCHESTER | 5562 | — | Yes |
| 860-282 | HARTFORD | 9147 | — | — |
| 860-283 | THOMASTON | 9147 | — | — |
| 860-284 | FARMINGTON | 9147 | — | Yes |
| 860-285 | WINDSOR | 9147 | — | — |
| 860-286 | HARTFORD | 9147 | — | — |
| 860-287 | NEW LONDON | 6388 | 2002-10-22 | Yes |
| 860-288 | MANCHESTER | 4800 | — | Yes |
| 860-289 | HARTFORD | 9147 | — | — |
| 860-290 | HARTFORD | 9147 | — | — |
| 860-291 | HARTFORD | 9147 | — | — |
| 860-292 | WINDSORLKS | 9147 | — | Yes |
| 860-293 | HARTFORD | 9147 | — | — |
| 860-294 | TORRINGTON | 7229 | — | Yes |
| 860-295 | E HAMPTON | 9147 | — | Yes |
| 860-296 | HARTFORD | 9147 | — | — |
| 860-297 | HARTFORD | 9147 | — | Yes |
| 860-298 | WINDSOR | 9147 | — | — |
| 860-299 | HARTFORD | 9147 | — | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.